Update the example config to match reality

We've not had a direct IRC connection in this repo for a while now,
and we need a traclink template.

Change-Id: I8d1045d8fd65e56c39b2ff068dee25636c715d04
Make project links configurable

Move generation of the project link to a helper and have it use a
config value for the template.

Change-Id: I881e6129bc52b78994954ef757655cb41a70a75f
Claim support for Python 3 now that that works

Change-Id: Iacbfd0e66457e5a683e5631255481262c749ad5a